Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Closed trajectory in a central field of force; find the mass
- Nathanael
- · Replies 9 ·
How to find the positon of a local vector
- Aceix
- · Replies 6 ·
1st Law of Thermodynamics question
- Jamessamuel
- · Replies 7 ·
Relative Velocity problem: 2 pulleys riveted together
- bkw2694
- · Replies 8 ·
Capacitors and Calculating for Capacitance involving Plates
- Aromire
- · Replies 11 ·
Fluid Dynamics - Hydrostatic Pressure
- Lukas_RSA
- · Replies 1 ·
The Graph of an Idealized Quantized Spring-Mass Oscillator
- Oribe Yasuna
- · Replies 1 ·
What is the current flowing through the wires?
- songminho
- · Replies 2 ·
Forces needed to slide up the plane
- goldfish9776
- · Replies 11 ·
What Is the Sled's Speed When Released from a Compressed Spring?
- Elvis 123456789
- · Replies 8 ·
Finding Zero Power at Inductor Terminals
- RMZ
- · Replies 19 ·
Physics momentum and acceleration
- troy132
- · Replies 12 ·
Combine conservation of mechanical energy with the work-ener
- marcosdannyjp
- · Replies 1 ·
Weight Change: Earth vs Building Top | F=GMm/r^2
- SadPanda6022
- · Replies 25 ·
Finding angle for specific moment
- werson tan
- · Replies 13 ·
Potential Energy and Kinetic Energy
- Manh
- · Replies 4 ·
I'm curious what anyone gets for part d
- Matt_Theta
- · Replies 13 ·
How Does Point Connection Affect Potential in a Circuit with Resistor Ratios?
- Peter Velkov
- · Replies 9 ·
Velocity of boat connected by a pulley fixed at some height
- cr7einstein
- · Replies 6 ·
Moment on a a semi quarter plate
- werson tan
- · Replies 4 ·
Calculating Acceleration of a Ball Rolling Down a Slope
- Biasface
- · Replies 5 ·
How would you calculate the length of a year on a planet?
- songminho
- · Replies 2 ·
Determining Position and Center of Mass using Reference Frame
- Vicinity24
- · Replies 8 ·
How Do You Calculate Magnetic Energy Density at an Atom's Center?
- phyvamp
- · Replies 6 ·
How Is Energy Transformed in a Satellite's Decaying Orbit Due to Air Friction?
- Zynoakib
- · Replies 3 ·
Find Load in AD, BD, and DC: Solving Homework Questions
- goldfish9776
- · Replies 21 ·
Finding Image Distance Relative to the Eyepiece
- Barry Melby
- · Replies 1 ·
De Broglie wavelength of a train
- ConorDMK
- · Replies 1 ·
Density of bar submerged in water
- Roodles01
- · Replies 3 ·
How Can Torque Be Increased in an Electric Motor?
- Physics GOD
- · Replies 3 ·
Work done by forces on a block sliding down a frictionless incline
- Tim Wellens
- · Replies 5 ·
What is the magnitude and direction of resulting force with given values?
- SadPanda6022
- · Replies 5 ·
Position of third charged particle
- Voidy
- · Replies 3 ·
Solving Friction & Gravity Homework: Acceleration of Blocs
- astrololo
- · Replies 6 ·
Force exerted on the palm of your hand by a beam of light
- Eric Diaz
- · Replies 4 ·
Gauge pressure and atmospheric pressure
- ppppparker
- · Replies 2 ·
Determine the force involving static coefficient
- goldfish9776
- · Replies 2 ·
Stuck on Real Gas Problem Derivatives?
- krootox217
- · Replies 2 ·
Why Do Three Blocks on a Frictionless Surface Accelerate at the Same Rate?
- astrololo
- · Replies 2 ·
Book answer wrong? Work = Fd question. Space Shuttle entry
- Barclay
- · Replies 5 ·
Calculating Planet Mass from Stellar and Orbital Speed
- Dustin salinas
- · Replies 9 ·
How electric fields store energy in a capacitor
- kostoglotov
- · Replies 16 ·
Finding the mass of a planet is a binary system
- Zynoakib
- · Replies 2 ·
Tension in a System: Is My Answer Wrong?
- goldfish9776
- · Replies 6 ·
What Kind of Radiation Does the GM Counter Detect?
- new hand
- · Replies 1 ·
What are the individual speeds of two balls after a fully elastic collision?
- Monkeybusiness
- · Replies 7 ·
Energy changes of water from a reservoir
- Janiceleong26
- · Replies 10 ·
Question regarding current & magnetic field/force
- Callix
- · Replies 8 ·
Number of Particles in Left Half of a Confined Box with Varying Energies
- phoenix95
- · Replies 2 ·
Finding the speed v of the proton
- Janiceleong26
- · Replies 2 ·
Potential Energy and Loop-de-Loops
- brinstar
- · Replies 10 ·
What is the rotational velocity of the crank?
- Lauren Wright
- · Replies 3 ·
What Is the Minimum Velocity Required for a Sphere to Overcome a Step?
- andyfeynman
- · Replies 8 ·
Problem related to two conductors in contact
- gracy
- · Replies 31 ·
How to Solve for Joule-Coefficient in a Gas System?
- krootox217
- · Replies 10 ·
How hard must you hit a rod for it to swing up 180 degrees?
- Lauren Wright
- · Replies 1 ·
Calculating Coulomb Force on a Point Charge in a Square Distribution
- azizlwl
- · Replies 8 ·
No.of orders of diffraction visible
- Janiceleong26
- · Replies 3 ·
Understanding Back EMF in DC Motors
- Harrison G
- · Replies 16 ·
Electric Field of a Uniformly Charged Disc at Large Distances
- whatisreality
- · Replies 2 ·
Power consumption in KWH of motor
- Dave250526
- · Replies 7 ·
Battery connected outside a circuit
- Gabe805
- · Replies 7 ·
Calculating Spring Stretch on a Ramp with Varying Acceleration and Friction
- Tim Wellens
- · Replies 3 ·
Finding work done & temp change by looking at a plot
- Sondra
- · Replies 2 ·
Magnitude of radial component of jerk along line of centres
- tim_from_oz
- · Replies 1 ·
Connected objects with friction
- cfarrell
- · Replies 4 ·
Solve Spring Stretch on 30° Ramp, 20kg, 500N/m, Friction 0.3/.2
- Tim Wellens
- · Replies 6 ·
Net Entropy Change in Heat Engine Cycle
- Sondra
- · Replies 6 ·
Find the Resistor Size for 160W Power Delivery: Kirchoff's Law Question"
- roinujo1
- · Replies 11 ·
Police car catching speeder at constant velocity
- Heres2hoping
- · Replies 3 ·
What is the velocity of a dart that is fired?
- DeathEater
- · Replies 29 ·
Prove that the nth energy level of atom has degeneracy n^2
- tententententen
- · Replies 1 ·
Need some checking on these Multiple choice questions
- catch22
- · Replies 9 ·
Average potential and kinetic energies for H ground state
- tententententen
- · Replies 2 ·
Solving Equilibrium State Problems: Examples & Explanations
- Ivan Antunovic
- · Replies 10 ·
Energy eigenstates of a particle in a one dimensional box.
- phoenix95
- · Replies 12 ·
Finding Freefall Acceleration on a planet
- B3NR4Y
- · Replies 3 ·
How Does Non-Pure Rolling Differ from Pure Rolling in Rotational Dynamics?
- DavidLee
- · Replies 4 ·
Q and W for Van-der-Waals Gases
- krootox217
- · Replies 10 ·
Find fundamental freq. and 1st overtone closed each end pipe
- moenste
- · Replies 4 ·
Derivatives in relation to physics
- SadPanda6022
- · Replies 8 ·
Homework -- wavelength associated with a neutron moving with energy of 2ev
- as123
- · Replies 4 ·
Understanding the Collapse of Two Bodies in Free Space: Gravity Question
- Sobi
- · Replies 5 ·
What Direction Should You Row to Cross a River Straight Across?
- negation
- · Replies 17 ·
A gun of mass M fires a shell of mass m and recoils horizont
- jpcyiu
- · Replies 1 ·
Periodic motion -- Potential as a function of a non-linear Force(x)
- davon806
- · Replies 2 ·
Moment about distributed load (trapezium)
- goldfish9776
- · Replies 8 ·
Newton's Third Law: Explaining Why You Can't Lift Yourself
- astrololo
- · Replies 4 ·
Finding an angle with Newton's Second Law
- Mr Davis 97
- · Replies 3 ·
Calculating Electron Density: Ionospheric Research
- Tone L
- · Replies 2 ·
Action reaction problem or Newton's 3 law
- astrololo
- · Replies 8 ·
Electric potential difference in a charge
- i need help PLZ
- · Replies 11 ·
Current flowing through a loop due to an infinite wire
- eatsleep
- · Replies 1 ·
Finding the Net Height for a Human Cannonball: A Kinematic Approach
- hawkeye1029
- · Replies 5 ·
What Force is Needed to Move and Maintain an Ice-Fishing Hut?
- Sace Ver
- · Replies 1 ·
Impending motion vs start to slide
- goldfish9776
- · Replies 4 ·
What Is the Natural Length of the Spring?
- astrololo
- · Replies 10 ·
How Does Adding Mass Affect the Thrust of a Model Rocket?
- Sienna1123
- · Replies 3 ·
Simple Harmonic Motion - bungee jumping
- lucamacc
- · Replies 1 ·
Question regarding temperature of a star and its solar system/planets
- ezach1
- · Replies 8 ·